Steam-generator.



No. 761,719. Y PATENTED JUNE 7, 1904.

. I E SIDE .STBAM GENERATOR. APPLICATION FILED OCT. 7, 19 02.

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- .PATENTED JUNE 7, 1904.

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' STEAM GENERATOR. APPLICATION IILBI) OCT. 7, 1902. v

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UNITED STATES.

Patented June 7, 1904.

PATENT OFFICE.

STEAM-GENERATOR.

1 SPECIFICATION forming part of Letters Patent No. 761,719, dated June 7, 1904.

Applicationfiled October '7, 1902 Serial No. 126,299. (No model.)

To all whom it'may concern/.-

- Be it known that I, EDGAR SIDE, a citizen'of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented an Improved Steam- Generator, of which the following is a specification.

Myinvention relates to water-tube steamgenerators; and the objects of'my improvements are, first, to provide a water-tube generator that is easily and quickly accessible for examination and repairs; second, to provide very quick and large steaming capacity in a small and light generator; third, to provide for high pressure and at the same time immunity from deterioration and danger, and, fourth, to provide against the destructive effects of unequal expansion and contraction. I

I attain these objects by the devices illustrated in the accompanying drawings, in which Figure 1 is a perspective view of theinternal parts with most of the evaporating-coils left out for clearness of illustration. Fig. 2 is a perspective view ofthe outside coil and bottom or'base. Fig. 3 is an enlarged sectional elevation of one of the vertical drums and its superheating-coil. Fig. 4 is a, plan View of the bolt for retaining the sections in place. Fig. 5 is a vertical end view of part of a pair of evaporating-coils. Figs. 6 and 7 show the form of packing-rings for use between the sections. Figs. 8 and 9 show a right and left threaded union for connecting two short threaded outlets together.

Similar characters refer to similar parts throughout the several views.

The vertical drums A, A, A A and A having outlets B, G, D, and E solidly brazed in, are connected to outlets G of mud-drum F by right and left threaded unions H, Figs. 1, 3, 8, and 9. The long bolts 10, Figs. 8 and 4, are screwed tight in the outlets G and D.

Over these bolts copper or other soft packingrings, Fig. 6, are passed, followed with apair of evaporating-coils, which are connected in pairs by having their ends brazed in a short To outlet B, Fig. 3, is attached by union H,

Fig. 9, a superheating-coil L, the other end of which is attached to the steam-drum M by union H. If superheating-coils L are not wanted, I connect the vertical drums to steamdrums by tubes 8, which are screwed into outlets 9', Figs. 1 'andS, and connect to steamdrum M by unions.

The mud-drum F and the steam-drum M are directly connected at one or more points The evaporating-coils are supported by the links Q, which embrace the cap-nuts K. The links are adjustably bolted to beam R, which is fastened to square steel posts S S, Fig. 2. These posts are fastened at their lower ends to the bed-plate T.

The posts S are bored out to form them into a series of adjoining return bends and ways, into which the tubes U are inserted and brazed, forming the whole into one continuous coil with one side open. The entrance for feed-water'is at V, Fig. 2, and follows the coil, as indicated by dotted arrows on post S, to outlet W, which connects to inlet X on mud-drum F, Fig. 1, and two of the tubes at top have their free ends turned up to connect to each end of steam-drum M by unions. The

bottom tubes are arranged in the posts S to form a single runway, and the tubes above them to the top are arranged open to each other in the posts, permitting freedom of exit for any steam that may form in them.

A jacket of asbestos 2 and sheet metal 3 surrounds the outer coil from post to post S and is made fast thereto. The end of the metal jacket at each post is formed for half of a hinge-joint from top to bottom, and to these is fitted a plate to cover. the opening, completing the jacket around the outside. Said plateis held in place by two wires inserted through the hingedparts, forming a door to open on either hinge by drawing either wire out, and

to take right off by drawing both out. The door is lined on the inside with asbestos.

The hood or top cover will lift off, and

when off the steam-drum and superheatingcoils may be removed in one piece by unscrewplaced in till a proper repair can be made.

An important part in the construction is the manner of making the joints, and for the purpose of making them reliable without undue strain on the threads I provide all faces with sharp V-grooves to meet and hold the packing, as shown at 4, Figs. 3, 5, and 9. While the union H is an essential in this construction for short solidly-attached outlets, I use it for any purpose where a longitudinal movement of the abutting nipples, outlets, or tubes is not objectionable.

The union H consists of a simple sleeve, having outside longitudinal recesses 5, Figs. 8, 8, and 9, for the insertion and grasp of a spanner-wrench. This sleeve is threaded inside, right and left, and a portion 6 in the center is removed, Fig. 9, leaving an annular recess for the plain copper or other packingring to adjust in.

The outlets C in drums A, Fig, 3, extend downward on the inside of the drums to project the steam and water downward, to permit a complete separation of the same, and to aid in the circulation of the water. The outlets D are pierced at 7, Fig. 8, to admit the water to the evaporating-coils.

To further aid the circulation, I arrange the lower part of the coils to be vertical and cover that portion of them with asbestos or other heat-insulating materials, and the lower sections J, Fig. 1, have asbestos Y wrapped around them, either separately or the whole are Wrapped with one removable piece. This causes the heat to act most on the upper parts of the coils, to the end that all the steam may be driven out at the top and nearly solid water enter at bottom.

I make my evaporating coils not plain straight coils, but bent or slued, to form them in curves and offsets longitudinally, as shown atP, Fig. .1, and L, Fig. 3, which forces the heat to impinge more directly and strongly, to the end that more heat is absorbed and greater evaporation attained in a given time with the same amount of fuel. For the same reasons I arrange the upper portions of the evaporating-coils considerably out of the vertical, as shown at P, Fig. 1.

In my steam-generator a vertical d rum, with its evaporating-coils and superheating-eoil,

forms a sectional unit and with an outer coil and jacket is a complete steam-generator. 1 take any desired number of these units and connect them to a mud and steam drum in tiers and make up a generator of one or more of these tiers surrounded by the outer coil and jacket, as shown. In this construction every part is perfectly free to expand and contract indepeinlently, and every part is readily accessible, and ample proportion of steam room is provided without using any large diameters, which would limit the ability to bear high pressure with safety. It also provides ample room for the separation of steam and water, and while I have designed it specially for automobile use it can be used to advantage for many purposes.

I am aware that prior to my invention water-tube steam-generators have been made with straight evaporating-coils arranged vertically, and therefore do not claim such coils broadly.

hat I do claim as my invention, and desire to secure by Letters Patent, is-

1. In asteam-generator, curved helical evaporating-coils, permanently joined in pairs, at each end, to short lengths of tube, to form a section of a unit; substantially as shown and specified.

2. In a steam-generator, one or more pairs of curved helical emporating-coils, permanently joined in pairs, at each end, to short lengths of tube; said pairs of coils ranged side by side, removably connected, by soft-metal packing between the short lengths of tube, and bolts through them, to the side. openings, at top and bottom, of a vertical drum; to form a sectional unit; and insulation of the lower ends of said sections; all substantially as shown and specified.

3. In asteam-generator; the generator-coil outlets, inside scparati ng-chambers of vertical drums of units, directed downward parallel with their axis, by hoods, permanently joining and forming part of the drums; said hoods also forming anchorage for bolts, for holding sections in place; substantially as shown, and for the purposes specified.

4. In a steam-generator; a partly-em-ircling outside coil, consisting of bent tubes, superimposed directly in contact, connected only and permanently, at their extreme ends, to inscparably-adjoining ways; ranged in line, substantially at right angles to the ends of said tubes: the whole, forming a single continuous internal runway; substantially as shown and specified.

5. In a steam-generator; helical coils slued or offset in reference to their axis, for the purpose of opening a close coil to heat percolation, as a superheating-coil, for connecting each vertical d rum of unit, to horizontal steamdrum: and a mud-drum connecting each ver- In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

EDGAR SIDE. itnesses:

WM. E. ULERY, JOHN BAXTER. 

